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    • Quantification of coal in the colombian caribbean beaches (department of magdalena) 

      García, Julián Andrés; Ahrens, Michael
      ABSTRACT To quantify the percentage of unburnt coal in beach sediments from the department of Magdalena,(Colombia) a simple procedure was devised to separate the sediment mineral phases according to their density. Sediments ...
      Universidad Nacional de Colombia Revistas electrónicas UN Acta Biológica Colombiana.